Answer:
V = -0.8 m/s
Explanation:
given,
mass of the child (m)= 25 Kg
mass of the boat(M) = 30 Kg
velocity of boat = ?
Assuming Boys throws package of mass(m₁) 6 Kg at the horizontal speed of 10 m/s
using conservation of momentum
(M + m + m₁) V = (M+ m)V + m₁ v
initial velocity V = 0 m/s
(M + m + m₁) x 0 = (M+ m)V + m₁ v
0 = (25+50)V + 6 x 1 0
75 V = -60
V = -0.8 m/s
negative direction shows that velocity in the direction opposite to the motion of package.
